All that should swap over, but IIRC you'll need the same power steering bracket off the rig you get the intake manifold from. I do know that the newer model injectors won't work with the older wiring, but they can be adapted to fit.

Good write-up here : Swapping to a 2000 Inlet Manifold

Also, from what I've seen you get the best performance out of this if you have other power adders (intake, header, exhaust, bored TB, etc). You'll also want to get an adjustable FPR. From what I've seen, swapping just the intake manifold usually results in a slight decrease in performance.

 

intake swap

jeepermatt is right, You do have to swap the power steering brackets too. The injectors will not swap but you can use your old rail and injectors. Yes, your old throttle body will also work with the newer intake manifold. The best performance adders are the bored throttle body and many machine shops can bore out your throttle body pretty cheap in comparison to buying an aftermarket one that is alreay done......this bored throttle body by itself will give you the biggest gains but adding a high flow air filter and high flow muffler will let it flow better because the engine will be sucking in more air and without the air filter and muffler, it will restrict the flow. I suggest cleaning the inside of the new intake manifold with kerosene or parts cleaner before putting it on to make sure there is no debris in it and it will help remove all the carbon....a simple tooth brush will quicken the cleaning time too.

Warning: do not use any of the newer sensors on your engine, just use your old sensors that were already on your engine.

 

Ok, so explain the concept of the bored throttle body. What part needs to be bored? And yes planning on doing a new intake filter system anyway.

 

The stock TB is 62mm on top but necks down to something like 57mm on the bottom (from the butteryfly and down). Basically you remove the TB, take off the sensors, remove the butterly and rod, then bore it out to 62mm. I went in small increments using sanding drums with some serious grit in a bench press, then the final pass using very fine grit to smooth it out nicely.

Jeepers'n'Creepers used to sell them for $250, with $100 returned to you after you shipped them your original as a core. They recently stopped providing this service due to a large number of OEM TB's having bubbles and voids in the casting which were only visible after boring it.
It's still a worth-while mod, considering most aftermarket units sell for about $400. Even if your's has said factory defects, you can snag a one out of a JY for cheap and do it again.

http://jeep-xj.info/HowtoTBboring.htm